Pasadena Commercial Office Building HVAC Services

What We Do for Office Buildings

We plan, build, modernize, and maintain commercial HVAC systems for single‑tenant offices, multi‑tenant high‑rises, corporate campuses, creative spaces, and professional suites. Our approach is engineering‑first: careful load analysis, system right‑sizing, lifecycle cost modeling, and meticulous commissioning that protects your budget and uptime.

• Design‑build HVAC for new shells, core and shell, and TI
• Retrofits and replacements that reduce energy and noise
• Controls and BMS integration for better visibility
• Commissioning, TAB, and Title 24 compliance
• Proactive maintenance and rapid repair services

Systems We Service and Install

From AC PRO‑supplied packaged rooftop units to advanced heat pump and VRF systems, we deliver stable comfort and predictable operating costs.

• Packaged RTUs, split systems, heat pumps, and economizers
• VRF/ductless solutions ideal for multi‑zone office floors
• Dedicated Outdoor Air Systems (DOAS) and demand‑control ventilation
• Hydronic equipment, pumps, VFDs, and energy‑saving controls
• Filtration upgrades (MERV 13+), ventilation optimization, and IAQ monitoring

Our team is factory‑trained at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China). That depth lets us engineer precise solutions for complex layouts, high occupancy, and sensitive conference or server spaces.

Healthy Air for Better Work

Your office’s air should support health and productivity. We optimize ventilation rates, filtration, and controls to improve indoor air quality while managing energy spend. We design for fresh air delivery, pressure balance, and consistent temperatures, so occupants stay comfortable throughout the day.

• Ventilation tuning and outside air strategies
• Enhanced filtration and cleaner return paths
• IAQ sensors and actionable dashboards
• Humidity and temperature stability for comfort

Design‑Build and Retrofit Expertise

We specialize in occupied retrofits and fast‑track tenant improvements. Expect clean job sites, phased schedules, and coordination with property management to minimize disruption.

• Load calculations, duct design, and equipment selection
• AC PRO‑supplied equipment, accessories, and controls procurement to accelerate timelines
• Seismic anchorage, curb adaptors, and crane logistics
• Commissioning, test and balance, and closeout documentation

Controls, BMS, and Energy Management

We integrate packaged units, VRF, and ventilation with your building automation for simple scheduling, remote alerts, and measurable savings.

• Smart thermostats, zone control, and open‑protocol integration
• Scheduling, alarms, and trend logging for proactive service
• Energy tune‑ups and utility‑friendly setpoint strategies

Maintenance Plans for Offices

Reliable HVAC lowers complaints and protects leases. Our plans are tailored to your building’s equipment and occupancy profile.

• Seasonal inspections, coil cleaning, and refrigerant checks
• Belt, filter, and bearing service to prevent downtime
• IAQ checks, economizer verification, and drain maintenance
• Priority response and clear service reporting

Compliance, Safety, and Documentation

We handle permits, Title 24, and commissioning to keep your projects compliant. Our safety program aligns with California standards for protected, efficient jobsites.

• Title 24 documentation and acceptance testing
• SCAQMD considerations and best practices
• LADBS and local jurisdiction permitting where required

Why #1 AC Guys

• 4th‑generation family of engineers with 80+ years of engineering expertise
• Factory‑trained at Fujitsu, Mitsubishi Elektrik, Midea, Gree, and Hier
• Specialists in large, complex office projects and occupied retrofits
• Healthy air mission with measurable IAQ and comfort improvements
• AC PRO‑supplied systems and parts streamline delivery and support

Pasadena and Greater LA Service Area

Based in Los Angeles County, we serve Pasadena business districts including Old Pasadena, South Lake, Playhouse District, East Pasadena, and nearby cities such as Glendale, Burbank, Arcadia, and Alhambra — plus Orange County, Ventura County, and Western Riverside County.

Get Started

Request a site assessment, load analysis, or bid set review. Whether you need a turnkey design‑build for a new office, a fast rooftop unit swap, a VRF expansion for a multi‑tenant floor, or a maintenance plan that stabilizes comfort and costs, #1 AC Guys is ready to help. One call connects you with an engineering‑driven team dedicated to healthier air and dependable performance in Pasadena.